diff --git a/packages/ai/CHANGELOG.md b/packages/ai/CHANGELOG.md
index 3814e2b2f..6e6769be3 100644
--- a/packages/ai/CHANGELOG.md
+++ b/packages/ai/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Added
 
+- Added Ant Ling as a built-in OpenAI-compatible provider with Ling 2.6 and Ring 2.6 models.
 - Added MiniMax-M3 model to the `minimax` and `minimax-cn` direct providers, and removed the hardcoded context-window override that was masking models.dev values ([#5313](https://github.com/earendil-works/pi/issues/5313)).
 - Added NVIDIA NIM as a built-in OpenAI-compatible provider, exposing public NIM models that support tool use.
 
diff --git a/packages/ai/README.md b/packages/ai/README.md
index 76a987692..8f65bc727 100644
--- a/packages/ai/README.md
+++ b/packages/ai/README.md
@@ -51,6 +51,7 @@ Unified LLM API with automatic model discovery, provider configuration, token an
 ## Supported Providers
 
 - **OpenAI**
+- **Ant Ling**
 - **Azure OpenAI (Responses)**
 - **OpenAI Codex** (ChatGPT Plus/Pro subscription, requires OAuth, see below)
 - **DeepSeek**
@@ -939,7 +940,7 @@ interface OpenAICompletionsCompat {
   requiresAssistantAfterToolResult?: boolean; // Whether tool results must be followed by an assistant message (default: false)
   requiresThinkingAsText?: boolean;  // Whether thinking blocks must be converted to text (default: false)
   requiresReasoningContentOnAssistantMessages?: boolean; // Whether all replayed assistant messages must include empty reasoning_content when reasoning is enabled (default: auto-detected for DeepSeek)
-  thinkingFormat?: 'openai' | 'openrouter' | 'deepseek' | 'together' | 'zai' | 'qwen' | 'qwen-chat-template'; // Format for reasoning param: 'openai' uses reasoning_effort, 'openrouter' uses reasoning: { effort }, 'deepseek' uses thinking: { type } plus reasoning_effort when supported, 'together' uses reasoning: { enabled } plus reasoning_effort when supported, 'zai' uses enable_thinking, 'qwen' uses enable_thinking, 'qwen-chat-template' uses chat_template_kwargs.enable_thinking (default: openai)
+  thinkingFormat?: 'openai' | 'openrouter' | 'deepseek' | 'together' | 'zai' | 'qwen' | 'qwen-chat-template' | 'string-thinking' | 'ant-ling'; // Format for reasoning param: 'openai' uses reasoning_effort, 'openrouter' uses reasoning: { effort }, 'deepseek' uses thinking: { type } plus reasoning_effort when supported, 'together' uses reasoning: { enabled } plus reasoning_effort when supported, 'zai' uses enable_thinking, 'qwen' uses enable_thinking, 'qwen-chat-template' uses chat_template_kwargs.enable_thinking, 'string-thinking' uses top-level thinking, 'ant-ling' uses reasoning: { effort } only for mapped efforts (default: openai)
   cacheControlFormat?: 'anthropic';  // Anthropic-style cache_control on system prompt, last tool, and last user/assistant text content
   openRouterRouting?: OpenRouterRouting; // OpenRouter routing preferences (default: {})
   vercelGatewayRouting?: VercelGatewayRouting; // Vercel AI Gateway routing preferences (default: {})
@@ -1100,6 +1101,7 @@ In Node.js environments, you can set environment variables to avoid passing API
 | Provider | Environment Variable(s) |
 |----------|------------------------|
 | OpenAI | `OPENAI_API_KEY` |
+| Ant Ling | `ANT_LING_API_KEY` |
 | Azure OpenAI | `AZURE_OPENAI_API_KEY` + `AZURE_OPENAI_BASE_URL` (e.g. `https://{resource}.openai.azure.com`) or `AZURE_OPENAI_RESOURCE_NAME`. Supports `*.openai.azure.com` and `*.cognitiveservices.azure.com`; root endpoints auto-normalize to `/openai/v1`. Optional: `AZURE_OPENAI_API_VERSION` (default `v1`), `AZURE_OPENAI_DEPLOYMENT_NAME_MAP`. |
 | Anthropic | `ANTHROPIC_API_KEY` or `ANTHROPIC_OAUTH_TOKEN` |
 | DeepSeek | `DEEPSEEK_API_KEY` |
diff --git a/packages/ai/scripts/generate-models.ts b/packages/ai/scripts/generate-models.ts
index 93a664e23..c98f868cd 100644
--- a/packages/ai/scripts/generate-models.ts
+++ b/packages/ai/scripts/generate-models.ts
@@ -169,6 +169,15 @@ const DEEPSEEK_V4_THINKING_LEVEL_MAP = {
 	xhigh: "max",
 } as const;
 
+const ANT_LING_RING_THINKING_LEVEL_MAP = {
+	off: null,
+	minimal: null,
+	low: null,
+	medium: null,
+	high: "high",
+	xhigh: "xhigh",
+} as const;
+
 const OPENAI_RESPONSES_NONE_REASONING_MODELS = new Set([
 	"gpt-5.1",
 	"gpt-5.2",
@@ -330,6 +339,10 @@ function applyThinkingLevelMetadata(model: Model<any>): void {
 		// OpenCode Zen Grok Build reasons by default but rejects explicit reasoningEffort.
 		mergeThinkingLevelMap(model, { off: null, minimal: null, low: null, medium: null });
 	}
+	if (model.provider === "ant-ling" && model.reasoning) {
+		// Ring reasons by default. Only high/xhigh have documented explicit effort controls.
+		mergeThinkingLevelMap(model, ANT_LING_RING_THINKING_LEVEL_MAP);
+	}
 }
 
 function getAnthropicMessagesCompat(provider: string, modelId: string): AnthropicMessagesCompat | undefined {
@@ -1643,6 +1656,56 @@ async function generateModels() {
 	];
 	allModels.push(...deepseekV4Models);
 
+	const antLingCompat: OpenAICompletionsCompat = {
+		supportsStore: false,
+		supportsDeveloperRole: false,
+		supportsReasoningEffort: false,
+		maxTokensField: "max_tokens",
+		supportsLongCacheRetention: false,
+	};
+	const antLingModels: Model<"openai-completions">[] = [
+		{
+			id: "Ling-2.6-flash",
+			name: "Ling 2.6 Flash",
+			api: "openai-completions",
+			baseUrl: "https://api.ant-ling.com/v1",
+			provider: "ant-ling",
+			reasoning: false,
+			input: ["text"],
+			cost: { input: 0.01, output: 0.02, cacheRead: 0, cacheWrite: 0 },
+			contextWindow: 262144,
+			maxTokens: 65536,
+			compat: antLingCompat,
+		},
+		{
+			id: "Ling-2.6-1T",
+			name: "Ling 2.6 1T",
+			api: "openai-completions",
+			baseUrl: "https://api.ant-ling.com/v1",
+			provider: "ant-ling",
+			reasoning: false,
+			input: ["text"],
+			cost: { input: 0.06, output: 0.25, cacheRead: 0, cacheWrite: 0 },
+			contextWindow: 262144,
+			maxTokens: 65536,
+			compat: antLingCompat,
+		},
+		{
+			id: "Ring-2.6-1T",
+			name: "Ring 2.6 1T",
+			api: "openai-completions",
+			baseUrl: "https://api.ant-ling.com/v1",
+			provider: "ant-ling",
+			reasoning: true,
+			input: ["text"],
+			cost: { input: 0.06, output: 0.25, cacheRead: 0, cacheWrite: 0 },
+			contextWindow: 262144,
+			maxTokens: 65536,
+			compat: { ...antLingCompat, thinkingFormat: "ant-ling" },
+		},
+	];
+	allModels.push(...antLingModels);
+
 	for (const candidate of allModels) {
 		if (candidate.api === "openai-completions" && candidate.id.includes("deepseek-v4")) {
 			candidate.compat = {
diff --git a/packages/ai/src/env-api-keys.ts b/packages/ai/src/env-api-keys.ts
index 6321a03a1..510f3b387 100644
--- a/packages/ai/src/env-api-keys.ts
+++ b/packages/ai/src/env-api-keys.ts
@@ -99,6 +99,7 @@ function getApiKeyEnvVars(provider: string): readonly string[] | undefined {
 	}
 
 	const envMap: Record<string, string> = {
+		"ant-ling": "ANT_LING_API_KEY",
 		openai: "OPENAI_API_KEY",
 		"azure-openai-responses": "AZURE_OPENAI_API_KEY",
 		nvidia: "NVIDIA_API_KEY",
diff --git a/packages/ai/src/models.generated.ts b/packages/ai/src/models.generated.ts
index 97001d3a3..54acc9529 100644
--- a/packages/ai/src/models.generated.ts
+++ b/packages/ai/src/models.generated.ts
@@ -1552,6 +1552,63 @@ export const MODELS = {
 			maxTokens: 101376,
 		} satisfies Model<"bedrock-converse-stream">,
 	},
+	"ant-ling": {
+		"Ling-2.6-1T": {
+			id: "Ling-2.6-1T",
+			name: "Ling 2.6 1T",
+			api: "openai-completions",
+			provider: "ant-ling",
+			baseUrl: "https://api.ant-ling.com/v1",
+			compat: {"supportsStore":false,"supportsDeveloperRole":false,"supportsReasoningEffort":false,"maxTokensField":"max_tokens","supportsLongCacheRetention":false},
+			reasoning: false,
+			input: ["text"],
+			cost: {
+				input: 0.06,
+				output: 0.25,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 262144,
+			maxTokens: 65536,
+		} satisfies Model<"openai-completions">,
+		"Ling-2.6-flash": {
+			id: "Ling-2.6-flash",
+			name: "Ling 2.6 Flash",
+			api: "openai-completions",
+			provider: "ant-ling",
+			baseUrl: "https://api.ant-ling.com/v1",
+			compat: {"supportsStore":false,"supportsDeveloperRole":false,"supportsReasoningEffort":false,"maxTokensField":"max_tokens","supportsLongCacheRetention":false},
+			reasoning: false,
+			input: ["text"],
+			cost: {
+				input: 0.01,
+				output: 0.02,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 262144,
+			maxTokens: 65536,
+		} satisfies Model<"openai-completions">,
+		"Ring-2.6-1T": {
+			id: "Ring-2.6-1T",
+			name: "Ring 2.6 1T",
+			api: "openai-completions",
+			provider: "ant-ling",
+			baseUrl: "https://api.ant-ling.com/v1",
+			compat: {"supportsStore":false,"supportsDeveloperRole":false,"supportsReasoningEffort":false,"maxTokensField":"max_tokens","supportsLongCacheRetention":false,"thinkingFormat":"ant-ling"},
+			reasoning: true,
+			thinkingLevelMap: {"off":null,"minimal":null,"low":null,"medium":null,"high":"high","xhigh":"xhigh"},
+			input: ["text"],
+			cost: {
+				input: 0.06,
+				output: 0.25,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 262144,
+			maxTokens: 65536,
+		} satisfies Model<"openai-completions">,
+	},
 	"anthropic": {
 		"claude-3-5-haiku-20241022": {
 			id: "claude-3-5-haiku-20241022",
diff --git a/packages/ai/src/providers/openai-completions.ts b/packages/ai/src/providers/openai-completions.ts
index ae6d583e3..5093d3e88 100644
--- a/packages/ai/src/providers/openai-completions.ts
+++ b/packages/ai/src/providers/openai-completions.ts
@@ -578,6 +578,11 @@ function buildParams(
 		} else if (model.thinkingLevelMap?.off !== null) {
 			openRouterParams.reasoning = { effort: model.thinkingLevelMap?.off ?? "none" };
 		}
+	} else if (compat.thinkingFormat === "ant-ling" && model.reasoning && options?.reasoningEffort) {
+		const effort = model.thinkingLevelMap?.[options.reasoningEffort];
+		if (typeof effort === "string") {
+			(params as typeof params & { reasoning?: { effort: string } }).reasoning = { effort };
+		}
 	} else if (compat.thinkingFormat === "together" && model.reasoning) {
 		const togetherParams = params as Omit<typeof params, "reasoning_effort"> & {
 			reasoning?: { enabled: boolean };
@@ -1079,6 +1084,7 @@ function detectCompat(model: Model<"openai-completions">): ResolvedOpenAIComplet
 	const isCloudflareWorkersAI = provider === "cloudflare-workers-ai" || baseUrl.includes("api.cloudflare.com");
 	const isCloudflareAiGateway = provider === "cloudflare-ai-gateway" || baseUrl.includes("gateway.ai.cloudflare.com");
 	const isNvidia = provider === "nvidia" || baseUrl.includes("integrate.api.nvidia.com");
+	const isAntLing = provider === "ant-ling" || baseUrl.includes("api.ant-ling.com");
 
 	const isNonStandard =
 		isNvidia ||
@@ -1094,9 +1100,11 @@ function detectCompat(model: Model<"openai-completions">): ResolvedOpenAIComplet
 		provider === "opencode" ||
 		baseUrl.includes("opencode.ai") ||
 		isCloudflareWorkersAI ||
-		isCloudflareAiGateway;
+		isCloudflareAiGateway ||
+		isAntLing;
 
-	const useMaxTokens = baseUrl.includes("chutes.ai") || isMoonshot || isCloudflareAiGateway || isTogether || isNvidia;
+	const useMaxTokens =
+		baseUrl.includes("chutes.ai") || isMoonshot || isCloudflareAiGateway || isTogether || isNvidia || isAntLing;
 
 	const isGrok = provider === "xai" || baseUrl.includes("api.x.ai");
 	const isDeepSeek = provider === "deepseek" || baseUrl.includes("deepseek.com");
@@ -1107,7 +1115,8 @@ function detectCompat(model: Model<"openai-completions">): ResolvedOpenAIComplet
 	return {
 		supportsStore: !isNonStandard,
 		supportsDeveloperRole: isOpenRouterDeveloperRoleModel || (!isNonStandard && !isOpenRouter),
-		supportsReasoningEffort: !isGrok && !isZai && !isMoonshot && !isTogether && !isCloudflareAiGateway && !isNvidia,
+		supportsReasoningEffort:
+			!isGrok && !isZai && !isMoonshot && !isTogether && !isCloudflareAiGateway && !isNvidia && !isAntLing,
 		supportsUsageInStreaming: true,
 		maxTokensField: useMaxTokens ? "max_tokens" : "max_completion_tokens",
 		requiresToolResultName: false,
@@ -1120,16 +1129,24 @@ function detectCompat(model: Model<"openai-completions">): ResolvedOpenAIComplet
 				? "zai"
 				: isTogether
 					? "together"
-					: isOpenRouter
-						? "openrouter"
-						: "openai",
+					: isAntLing
+						? "ant-ling"
+						: isOpenRouter
+							? "openrouter"
+							: "openai",
 		openRouterRouting: {},
 		vercelGatewayRouting: {},
 		zaiToolStream: false,
 		supportsStrictMode: !isMoonshot && !isTogether && !isCloudflareAiGateway && !isNvidia,
 		cacheControlFormat,
 		sendSessionAffinityHeaders: false,
-		supportsLongCacheRetention: !(isTogether || isCloudflareWorkersAI || isCloudflareAiGateway || isNvidia),
+		supportsLongCacheRetention: !(
+			isTogether ||
+			isCloudflareWorkersAI ||
+			isCloudflareAiGateway ||
+			isNvidia ||
+			isAntLing
+		),
 	};
 }
 
diff --git a/packages/ai/src/types.ts b/packages/ai/src/types.ts
index 7a4487720..cbf136a63 100644
--- a/packages/ai/src/types.ts
+++ b/packages/ai/src/types.ts
@@ -22,6 +22,7 @@ export type ImagesApi = KnownImagesApi | (string & {});
 
 export type KnownProvider =
 	| "amazon-bedrock"
+	| "ant-ling"
 	| "anthropic"
 	| "google"
 	| "google-vertex"
@@ -390,7 +391,7 @@ export interface OpenAICompletionsCompat {
 	requiresThinkingAsText?: boolean;
 	/** Whether all replayed assistant messages must include an empty reasoning_content field when reasoning is enabled. Default: auto-detected from URL. */
 	requiresReasoningContentOnAssistantMessages?: boolean;
-	/** Format for reasoning/thinking parameter. "openai" uses reasoning_effort, "openrouter" uses reasoning: { effort }, "deepseek" uses thinking: { type } plus reasoning_effort when supported, "together" uses reasoning: { enabled } plus reasoning_effort when supported, "zai" uses top-level enable_thinking: boolean, "qwen" uses top-level enable_thinking: boolean, "qwen-chat-template" uses chat_template_kwargs.enable_thinking, and "string-thinking" uses top-level thinking: string. Default: "openai". */
+	/** Format for reasoning/thinking parameter. "openai" uses reasoning_effort, "openrouter" uses reasoning: { effort }, "deepseek" uses thinking: { type } plus reasoning_effort when supported, "together" uses reasoning: { enabled } plus reasoning_effort when supported, "zai" uses top-level enable_thinking: boolean, "qwen" uses top-level enable_thinking: boolean, "qwen-chat-template" uses chat_template_kwargs.enable_thinking, "string-thinking" uses top-level thinking: string, and "ant-ling" uses reasoning: { effort } only when the mapped effort is non-null. Default: "openai". */
 	thinkingFormat?:
 		| "openai"
 		| "openrouter"
@@ -399,7 +400,8 @@ export interface OpenAICompletionsCompat {
 		| "zai"
 		| "qwen"
 		| "qwen-chat-template"
-		| "string-thinking";
+		| "string-thinking"
+		| "ant-ling";
 	/** OpenRouter-specific routing preferences. Only used when baseUrl points to OpenRouter. */
 	openRouterRouting?: OpenRouterRouting;
 	/** Vercel AI Gateway routing preferences. Only used when baseUrl points to Vercel AI Gateway. */
diff --git a/packages/ai/test/openai-completions-tool-choice.test.ts b/packages/ai/test/openai-completions-tool-choice.test.ts
index c06ac344e..be6419d61 100644
--- a/packages/ai/test/openai-completions-tool-choice.test.ts
+++ b/packages/ai/test/openai-completions-tool-choice.test.ts
@@ -2,7 +2,7 @@ import { Type } from "typebox";
 import { beforeEach, describe, expect, it, vi } from "vitest";
 import { getModel } from "../src/models.ts";
 import { convertMessages } from "../src/providers/openai-completions.ts";
-import { streamSimple } from "../src/stream.ts";
+import { stream, streamSimple } from "../src/stream.ts";
 import type { AssistantMessage, Model, Tool, ToolResultMessage } from "../src/types.ts";
 
 const mockState = vi.hoisted(() => ({
@@ -1295,4 +1295,95 @@ describe("openai-completions tool_choice", () => {
 		expect(params.reasoning).toEqual({ effort: "high" });
 		expect(params.reasoning_effort).toBeUndefined();
 	});
+
+	it("uses Ant Ling compatibility metadata", async () => {
+		const model = getModel("ant-ling", "Ring-2.6-1T")!;
+		let payload: unknown;
+
+		expect(model.compat).toMatchObject({
+			supportsStore: false,
+			supportsDeveloperRole: false,
+			supportsReasoningEffort: false,
+			maxTokensField: "max_tokens",
+			thinkingFormat: "ant-ling",
+			supportsLongCacheRetention: false,
+		});
+		expect(model.compat?.supportsStrictMode).toBeUndefined();
+		expect(model.compat?.requiresReasoningContentOnAssistantMessages).toBeUndefined();
+
+		await streamSimple(
+			model,
+			{
+				systemPrompt: "Follow instructions.",
+				messages: [{ role: "user", content: "Hi", timestamp: Date.now() }],
+			},
+			{
+				apiKey: "test",
+				maxTokens: 123,
+				reasoning: "high",
+				cacheRetention: "long",
+				sessionId: "ant-ling-session",
+				onPayload: (params: unknown) => {
+					payload = params;
+				},
+			},
+		).result();
+
+		const params = (payload ?? mockState.lastParams) as {
+			max_tokens?: number;
+			max_completion_tokens?: number;
+			messages?: Array<{ role?: string }>;
+			reasoning?: { effort?: string };
+			reasoning_effort?: string;
+			store?: boolean;
+			prompt_cache_key?: string;
+			prompt_cache_retention?: string;
+		};
+		expect(params.max_tokens).toBe(123);
+		expect(params.max_completion_tokens).toBeUndefined();
+		expect(params.messages?.[0]?.role).toBe("system");
+		expect(params.reasoning).toEqual({ effort: "high" });
+		expect(params.reasoning_effort).toBeUndefined();
+		expect(params.store).toBeUndefined();
+		expect(params.prompt_cache_key).toBeUndefined();
+		expect(params.prompt_cache_retention).toBeUndefined();
+	});
+
+	it("omits Ant Ling reasoning for unmapped direct reasoning efforts and non-reasoning models", async () => {
+		const ring = getModel("ant-ling", "Ring-2.6-1T")!;
+		let payload: unknown;
+
+		await stream(
+			ring,
+			{
+				messages: [{ role: "user", content: "Hi", timestamp: Date.now() }],
+			},
+			{
+				apiKey: "test",
+				reasoningEffort: "medium",
+				onPayload: (params: unknown) => {
+					payload = params;
+				},
+			},
+		).result();
+
+		expect((payload ?? mockState.lastParams) as { reasoning?: unknown }).not.toHaveProperty("reasoning");
+
+		const ling = getModel("ant-ling", "Ling-2.6-flash")!;
+		await streamSimple(
+			ling,
+			{
+				messages: [{ role: "user", content: "Hi", timestamp: Date.now() }],
+			},
+			{
+				apiKey: "test",
+				reasoning: "high",
+				onPayload: (params: unknown) => {
+					payload = params;
+				},
+			},
+		).result();
+
+		expect((payload ?? mockState.lastParams) as { reasoning?: unknown }).not.toHaveProperty("reasoning");
+	});
 });
diff --git a/packages/ai/test/stream.test.ts b/packages/ai/test/stream.test.ts
index 1693f4066..9a70b6c28 100644
--- a/packages/ai/test/stream.test.ts
+++ b/packages/ai/test/stream.test.ts
@@ -1169,6 +1169,27 @@ describe("Generate E2E Tests", () => {
 		},
 	);
 
+	describe.skipIf(!process.env.ANT_LING_API_KEY)("Ant Ling Provider (Ling 2.6 Flash via OpenAI Completions)", () => {
+		const llm = getModel("ant-ling", "Ling-2.6-flash");
+
+		it("should complete basic text generation", { retry: 3 }, async () => {
+			await basicTextGeneration(llm);
+		});
+
+		it("should handle tool calling", { retry: 3 }, async () => {
+			await handleToolCall(llm);
+		});
+
+		it("should handle streaming", { retry: 3 }, async () => {
+			await handleStreaming(llm);
+		});
+
+		it("should handle thinking mode", { retry: 3 }, async () => {
+			const ringModel = getModel("ant-ling", "Ring-2.6-1T");
+			await handleThinking(ringModel, { reasoningEffort: "high" });
+		});
+	});
+
 	// =========================================================================
 	// OAuth-based providers (credentials from ~/.pi/agent/oauth.json)
 	// Tokens are resolved at module level (see oauthTokens above)
diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index 82c509e41..46eebe64b 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Added
 
+- Added Ant Ling provider selection and setup documentation.
 - Added NVIDIA NIM provider selection, setup documentation, and direct NIM request attribution headers.
 - Added `ctx.mode` to extension contexts so extensions can distinguish TUI, RPC, JSON, and print mode.
 - Added `ctx.getSystemPromptOptions()` for extension commands to inspect the current base system prompt inputs.
diff --git a/packages/coding-agent/README.md b/packages/coding-agent/README.md
index 585a93a0c..8ef336c79 100644
--- a/packages/coding-agent/README.md
+++ b/packages/coding-agent/README.md
@@ -110,6 +110,7 @@ For each built-in provider, pi maintains a list of tool-capable models, updated
 
 **API keys:**
 - Anthropic
+- Ant Ling
 - OpenAI
 - Azure OpenAI
 - DeepSeek
diff --git a/packages/coding-agent/docs/providers.md b/packages/coding-agent/docs/providers.md
index e7a77c5aa..0ecf439df 100644
--- a/packages/coding-agent/docs/providers.md
+++ b/packages/coding-agent/docs/providers.md
@@ -49,6 +49,7 @@ pi
 | Provider | Environment Variable | `auth.json` key |
 |----------|----------------------|------------------|
 | Anthropic | `ANTHROPIC_API_KEY` | `anthropic` |
+| Ant Ling | `ANT_LING_API_KEY` | `ant-ling` |
 | Azure OpenAI Responses | `AZURE_OPENAI_API_KEY` | `azure-openai-responses` |
 | OpenAI | `OPENAI_API_KEY` | `openai` |
 | DeepSeek | `DEEPSEEK_API_KEY` | `deepseek` |
@@ -85,6 +86,7 @@ Store credentials in `~/.pi/agent/auth.json`:
 ```json
 {
   "anthropic": { "type": "api_key", "key": "sk-ant-..." },
+  "ant-ling": { "type": "api_key", "key": "..." },
   "openai": { "type": "api_key", "key": "sk-..." },
   "deepseek": { "type": "api_key", "key": "sk-..." },
   "nvidia": { "type": "api_key", "key": "nvapi-..." },
diff --git a/packages/coding-agent/src/cli/args.ts b/packages/coding-agent/src/cli/args.ts
index 8156bd03f..458bd43ee 100644
--- a/packages/coding-agent/src/cli/args.ts
+++ b/packages/coding-agent/src/cli/args.ts
@@ -328,6 +328,7 @@ ${chalk.bold("Examples:")}
 ${chalk.bold("Environment Variables:")}
   ANTHROPIC_API_KEY                - Anthropic Claude API key
   ANTHROPIC_OAUTH_TOKEN            - Anthropic OAuth token (alternative to API key)
+  ANT_LING_API_KEY                 - Ant Ling API key
   OPENAI_API_KEY                   - OpenAI GPT API key
   AZURE_OPENAI_API_KEY             - Azure OpenAI API key
   AZURE_OPENAI_BASE_URL            - Azure OpenAI/Cognitive Services base URL (e.g. https://{resource}.openai.azure.com)
diff --git a/packages/coding-agent/src/core/model-resolver.ts b/packages/coding-agent/src/core/model-resolver.ts
index e3af076da..a00471c9c 100644
--- a/packages/coding-agent/src/core/model-resolver.ts
+++ b/packages/coding-agent/src/core/model-resolver.ts
@@ -13,6 +13,7 @@ import type { ModelRegistry } from "./model-registry.ts";
 /** Default model IDs for each known provider */
 export const defaultModelPerProvider: Record<KnownProvider, string> = {
 	"amazon-bedrock": "us.anthropic.claude-opus-4-6-v1",
+	"ant-ling": "Ring-2.6-1T",
 	anthropic: "claude-opus-4-8",
 	openai: "gpt-5.4",
 	"azure-openai-responses": "gpt-5.4",
diff --git a/packages/coding-agent/src/core/provider-display-names.ts b/packages/coding-agent/src/core/provider-display-names.ts
index 789f31530..3481e6aef 100644
--- a/packages/coding-agent/src/core/provider-display-names.ts
+++ b/packages/coding-agent/src/core/provider-display-names.ts
@@ -1,6 +1,7 @@
 export const BUILT_IN_PROVIDER_DISPLAY_NAMES: Record<string, string> = {
 	anthropic: "Anthropic",
 	"amazon-bedrock": "Amazon Bedrock",
+	"ant-ling": "Ant Ling",
 	"azure-openai-responses": "Azure OpenAI Responses",
 	cerebras: "Cerebras",
 	"cloudflare-ai-gateway": "Cloudflare AI Gateway",
diff --git a/packages/coding-agent/test/model-resolver.test.ts b/packages/coding-agent/test/model-resolver.test.ts
index 7339200bc..0ac549394 100644
--- a/packages/coding-agent/test/model-resolver.test.ts
+++ b/packages/coding-agent/test/model-resolver.test.ts
@@ -378,11 +378,12 @@ describe("default model selection", () => {
 		expect(defaultModelPerProvider["openai-codex"]).toBe("gpt-5.5");
 	});
 
-	test("zai, minimax, and cerebras defaults track current models", () => {
+	test("zai, minimax, cerebras, and ant-ling defaults track current models", () => {
 		expect(defaultModelPerProvider.zai).toBe("glm-5.1");
 		expect(defaultModelPerProvider.minimax).toBe("MiniMax-M2.7");
 		expect(defaultModelPerProvider["minimax-cn"]).toBe("MiniMax-M2.7");
 		expect(defaultModelPerProvider.cerebras).toBe("zai-glm-4.7");
+		expect(defaultModelPerProvider["ant-ling"]).toBe("Ring-2.6-1T");
 	});
 
 	test("ai-gateway default tracks current model", () => {